#include <iostream>
using namespace std;

int Add(int x,int y)
{
  int ret = x+y;
  return ret;
}
int main()
{
  //cout<<"Hello World"<<endl;
  //cout<<"Hello World"<<endl;
  //cout<<"Hello World"<<endl;
  //cout<<"Hello World"<<endl;
  //cout<<"Hello World"<<endl
  int a = 10;
  int b = 20;
  int ret = Add(a,b);
  cout<<ret<<endl;
  return 0;
}
